JPS58154184A - Pressure contact connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to pressure contact type connectors, more specifically electrical connectors (
This invention relates to a press-contact type connector that prevents damage to the floating force of the tactile connector.

The pressure-contact type foldable octopus according to the present invention has a structure in which a press-contact having a Y-shaped press-contact part punched from a sheet metal material such as brass or phosphor bronze is housed in an insulating housing made of plastic, Since it is made of a thin sheet metal material (0.2 mm to 0.3 mm for small connectors), when a wire with an insulation coating, that is, a round wire, is press-fitted to the pressure welding part, the insulation around the conductor is This is a type in which the material is torn apart and only the core wire is pushed into the slot of the pressure welding part to establish a ti-air connection between the contact and the core wire.

FIGS. 1.1 and 1.2 show examples of the press-contact portions of the contacts of the above-mentioned conventional press-contact type connector. Section 1.1
The figure is obtained by punching a sheet metal material so that when bent into a U-shape, a pressure welding slot (2) with Y-shaped guide parts on both sides is formed. When the round wire is pushed into the pressure welding slot (2) housed in the
) has a structure in which it comes into pressure contact with the core wire of the round wire due to its rigidity. In addition, Fig. 1.2 shows a vertical wall portion bent from left and right into a fold-back shape, which is further bent into a 90-degree angle to form a pressure welding portion, and the pressure welding portion slot ( 4) When the round wire is pushed in, the outer wall of the insulation housing comes into contact with the side wall of the insulating housing, and due to the rigidity of the housing and the elasticity of the insulation displacement slot (4), the sheath of the round wire is torn i1 and the core wire of the round wire is separated. It is of a structure that presses the Furthermore, as another conventional example, the upper end is one Y
There is also one that is formed into a sharp blade shape to form a plate-shaped pressure contact part.

In a conventional pressure contact type connector in which a pressure contact portion as described above is formed, there must be a strict relationship between the diameter of the core wire of the round wire and the width (interval) of the pressure contact slot. If the width of the pressure welding slot is too wide than the appropriate size, the round wire sheathing may not be torn sufficiently, or even if it is torn, it may cause problems such as defective sheathing on one side of the welding slot. . In addition, if the width of the pressure welding slot is too small than the appropriate dimension, if the core wire pushes the slot wide beyond the elastic limit of the pressure welding slot, the slots that should be parallel will become 7
This may cause the wire to deform into a letter-shaped shape and come out of the slot, or damage a portion of the core wire, causing various electrical troubles. The above-mentioned problem is exacerbated by damage to the contacts due to external forces such as vibration and shock after mounting, so these errors can be absorbed by providing an appropriate holding force or play between the contact and the insulating housing. Therefore, the so-called 70-ting of the actual operation will be impaired.

Therefore, the manufacturing error in the width of the insulation displacement slot, that is, the balance between the opening of the insulation displacement slot and the crushing of the round wire, is an extremely important issue for insulation displacement connectors, and it is strictly It had to be controlled. Furthermore,
In the case of FIG. 1.2, the same problem as described above may occur due to the manufacturing error of the insulating housing in addition to the manufacturing error of the mounting tact.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problem, and to provide a press-contact type connector in which the 70-ring is not damaged without strict accuracy control of the press-contact slot and the insulating housing of the connector.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 2.1 is a partially cutaway perspective view showing the press-contact type contact of the present invention, showing a state in which a round line indicated by a dotted line is press-fitted. Figure 2.2 shows the second
A cross-sectional view cut along the line A-A' in Figure 1, and Figure 2.
Figure 3 shows the state of the pressure welding part when the round wire is pressure welded.
．． 2 is a diagram shown in relation to FIG. 2; FIG. Figure 2.2 and 2
．． Figure 3 shows the same parts with the same numbers as in Figure 2.1. (6) shown as a whole is the pressure contact part of the present invention, and the part (6) shown as a whole faces the pressure contact part through the base part (8).
1O) indicates a female contact portion that is fitted into a male connector such as a pin, that is, a rod-shaped connector. The figure 7 dimple is a structure to prevent fretting corrosion. (12) is a locking member, ie, a lance, to be locked in a hole in the insulating housing, which will be described later. Pressure contact part (6
) is an ear piece part (14) in which a pair of vertical walls provided parallel to the axis of the connector are further bent inward at 90 degrees.
and (16), which have elastic force and are superimposed on each other in the figure with substantially the same size and shape. Each region of the ear pieces (14) and (16) is provided with a pressure welding slot (1) having a Y-shaped guide portion, respectively.
8) and (2o) are provided, as shown in Figure 2.2,
Pressure welding thrower) (18) center and pressure welding thrower) (20
) are stacked on top of each other with their centers slightly shifted from each other,
The width of the slot formed by both is adjusted to be narrower than the thickness of the core wire to be press-fitted.

(18) and (20) are shown in shapes having approximately the same width and depth. It is preferable that the slopes of the respective guide portions are designed so that they match each other when they are overlapped.

At the end of the connector shown in FIG. 2.1, a round wire holder (22) for holding a round wire is shown.
Figure 4 is a view of the round wire presser seen from line B-B' in Figure 2.1. The round wire holder (22) holds the round wire by pushing the wire in from above and pressing the sheathing with the ears (24) and (26), so that the round wire does not swing or be pulled due to external force applied to the wire. This prevents the pressure welding part from being damaged.

FIG. 3 is a partially cutaway perspective view of an insulating housing for accommodating the pressure contact connector as described above. (28) is a window for inserting and guiding a rod-shaped connector into the contact part (10) shown in Fig. 2.1, and (30) is a window for inserting and guiding the rod-shaped connector into the contact part (10) shown in Fig. 2.1. (32) indicates a receiving hole for inserting into the housing from the side and assembling the connector, that is, a connector assembly, and (32) is a hole for engaging the lance shown in Figure 2.1 to retain the connector in the housing. shows. Next, a case will be described in which a single electric wire is successively connected to a connector. First, place the round wire on the Y-shaped guide part and press the round wire with a jig that presses down only the electric wire across the thickness of the pressure welding part. As shown in Figure 2.3, a dotted line is formed. The sheathing of the round wire (34) shown in is torn by the slot portion, and since the width of the slot portion is smaller than the diameter of the core wire, it is pressed against the core wire (36) (thrower).
Electrical connections are made between (18) and (20).

In order to explain the effect when a round wire is press-fitted in this way, using Fig. 2.1 as an example, the core wire of the press-fitted electric wire is moved all the way to the left of the slot (18) (thrower) (2
0) to the right, causing each ear piece to move slightly, and it is understood that these forces slightly bend the bent part of the connector, and that stress pinches the core wire. .

In other words, the core wire press-fitted into the slot part is inserted into the slot (
The gap formed by the right side of the slot (18) and the left side of the slot (20), that is, the combined slot portion of both, is pushed out, and the outer dimensions of this expanded slot due to pressure contact are always directed toward the center due to the eccentricity of both slots. The slots interact to cancel out the spread and firmly clamp the core wire. In this way, the pressure welding connector of the present invention uses only one side of the two slots and combines them to form one press-fit slot, so manufacturing errors in the width of each individual slot must be strictly controlled. Not needed. In the pressure welding slot of the conventional pressure welding connector shown in Figures 1 and 1, the amount that can be expanded by the core wire without damaging the slot is extremely small, so variations in the thickness of the core wire and manufacturing variations in the slot width are Although the connector of the present invention requires strict control, this is not necessary, and in the conventional connector shown in FIG. However, the pressure contact connector of the present invention is free from such problems and is advantageous in miniaturizing the connector. In addition, in the conventional pressure welding connector shown in Figure 1.2, there is a large capacity for pushing the core wire apart without damaging the slot portion, but the force of the slot portion that clamps the core wire is greater than the bending portion at the bottom of the connector. In addition to the elasticity of
Because the connector is highly dependent on the sidewall of the housing housing the connector, the accuracy of the width of the connector and the spacing between the sidewalls of the housing requires strict control; the connector of the present invention eliminates this need. It is easy to understand that there is no such thing.

FIG. 4 is a partially cutaway perspective view of a pressure contact portion of a contact showing another embodiment of the present invention.

The press-contacting part in Fig. 4 is a lug part (
36) and in the direction perpendicular to the long axis of the base portion (34) 9
It consists of an ear piece (38) bent in a 0 degree curvature shape,
They are stacked on top of each other. Ear pieces (36) and (3
8) have pressure welding slots (40) and (42).
are provided in the same manner as described in FIG. 2.1.

Center of pressure welding slot (40) and pressure welding thrower) (42)
are off-center and superimposed on each other, so
The pressure welding throwers (40) and (42) also have the same effect as the pressure welding part shown in FIG. 2.1.

As explained above, the pressure-welding type connector in which the contact consisting of the pressure-welding portion of the present invention is housed in the insulating housing of the connector is not affected by accuracy errors of the insulation housing or the pressure-welding slot, and is provided in the ear piece having elastic force. Due to the eccentricity of the pressure welding slots, the pressure welding slots always interact in the direction toward the center of the core wire of the round wire, and an appropriate force for clamping the core wire can be obtained, and the amount of expansion of the slot can also be large, so it can prevent excessive expansion. It has excellent effects such as preventing the contacts from being damaged and the round wire from being disconnected due to external forces such as vibrations and shocks after mounting, and maintaining good electrical contact.

[Brief explanation of the drawing]

1, 1 and 1.2 are partially cutaway perspective views showing the pressure contact part of a conventional contact contact, and FIG. 2.1 is a partially cutaway perspective view showing the pressure contact of the present invention. Section 2.2
The figure is a cross-sectional view taken along A-Am in Figure 2.1,
Figure 2.3 is a diagram showing the 0 pressure welding state when the round wire is pressed. Figure 2.4 is a diagram seen from the B-B' line in Figure 2.1. Figure 3 is the main FIG. 4 is a partially cut away perspective view of the plastic insulating housing according to the invention; FIG. Applicant L-Kuchi Co., Ltd. International Agent Patent Attorney Hiroshi Ono □, 1゜@74. Flash 1.2 Flash 2.1 Figure 2.2 Figure 2.3 FM Figure 2.4

Claims (1)

[Scope of Claims] 1. In a pressure welding connector having a base portion punched out of a sheet metal material and integrally formed, and a pair of pressure welding slots provided in the base portion, one of the pressure welding slots is An insulation displacement connector having contacts stacked one on top of the other with the centers of the insulation displacement slots and the other insulation displacement slots offset from each other. 2. In a pressure welding connector having a base portion punched out of a sheet metal material and formed integrally, and a pair of pressure welding slots provided in the base portion, the base portion may be bent into an L shape from the base portion. A pressure welding slot consisting of a pair of lug portions and a pressure welding slot provided in each region of the ear piece portion, the pressure welding slot being overlapped with the center of one pressure welding slot and the center of the other pressure welding slot being shifted from each other. A pressure welding connector with